136 lines
3.4 KiB
C++
136 lines
3.4 KiB
C++
#pragma once
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#include <QString>
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#include <QList>
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#include <QHash>
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#include "ast_basic.h"
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#include "libsyntax_global.h"
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namespace ast_gen
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{
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class TokenAccess;
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/**
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* @brief 解析上下文
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*/
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class SyntaxElement {
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public:
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virtual ~SyntaxElement() = default;
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/**
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* 绑定表达式实体.
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*
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* \return 表达式实例
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*/
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virtual std::shared_ptr<const ast_basic::Expression> bindExpression() const = 0;
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/**
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* @brief 类型标记
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* @return
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*/
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virtual int typeMark() const = 0;
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/**
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* 是否属于匿名节点.
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*
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* \return 匿名标志
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*/
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virtual bool isAnonymous() const = 0;
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/**
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* @brief 文件路径
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* @return
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*/
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virtual QString path() const = 0;
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/**
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* @brief 元素签名，如果是匿名元素返回空字符串
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* @return
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*/
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virtual QString signature() const = 0;
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/**
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* @brief 获取父元素
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* @return 未设置parent，返回nullptr
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*/
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virtual std::shared_ptr<const SyntaxElement> parent() const = 0;
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virtual void setParent(std::shared_ptr<const SyntaxElement> inst) = 0;
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/**
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* @brief 定义元素自身的Token集合
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* @return
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*/
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virtual QList<std::shared_ptr<const TokenAccess>> selfTokens() const = 0;
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};
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/**
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* @brief 语法元素整理访问接口
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*/
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class LIBSYNTAX_EXPORT ElementAccess {
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private:
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std::shared_ptr<const SyntaxElement> peers;
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public:
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ElementAccess(std::shared_ptr<const SyntaxElement> point);
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std::shared_ptr<const SyntaxElement> element() const;
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QList<std::shared_ptr<const ElementAccess>> children() const;
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/**
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* @brief 获取该元素下所有Token定义
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* @return
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*/
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virtual QList<std::shared_ptr<const TokenAccess>> tokens() const;
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};
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class LIBSYNTAX_EXPORT TokenAccess {
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private:
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std::shared_ptr<const ast_gen::SyntaxElement> element_bind;
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std::shared_ptr<const lib_token::Token> token_store;
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public:
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TokenAccess(std::shared_ptr<const ast_gen::SyntaxElement> elm_inst, std::shared_ptr<const lib_token::Token> token_inst);
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virtual std::shared_ptr<const ast_gen::SyntaxElement> bind() const;
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virtual std::shared_ptr<const lib_token::Token> token() const;
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};
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/**
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* @brief 根元素定义
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*/
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class LIBSYNTAX_EXPORT GlobalElement : public SyntaxElement, public ast_basic::ExpressionContext {
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private:
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QString names_store;
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QHash<QString, std::shared_ptr<const SyntaxElement>> node_cache;
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std::shared_ptr<ast_basic::Expression> bind_exprs = std::make_shared<ast_basic::ExpressionElement>(nullptr);
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public:
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static GlobalElement* UniquePtr;
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GlobalElement(const QString& name);
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virtual void clearCache();
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virtual void appendToCache(std::shared_ptr<const ast_gen::SyntaxElement> named_node);
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/**
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* @brief 通过节点签名获取定义节点
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* @param signature 完全签名
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* @return
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* @throws 没有指定节点抛出异常
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*/
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virtual std::shared_ptr<const ast_gen::SyntaxElement> getNamedNodeBy(int type, const QString& signature) const;
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virtual void addChild(std::shared_ptr<ast_gen::SyntaxElement> citem);
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// ParseElement interface
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public:
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virtual int typeMark() const override;
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virtual bool isAnonymous() const override;
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virtual QString signature() const override;
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virtual QString path() const override;
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virtual std::shared_ptr<const SyntaxElement> parent() const override;
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virtual void setParent(std::shared_ptr<const SyntaxElement> inst) override;
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virtual QList<std::shared_ptr<const TokenAccess>> selfTokens() const override;
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// 通过 SyntaxElement 继承
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std::shared_ptr<const ast_basic::Expression> bindExpression() const override;
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};
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} |